How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 8/9100.0*Chance in playoffs100.0*Average seed
CBR 2 Melb Mustangs 4 +0.1
+0.3
Melb Ice 4 Adelaide 2 +0.1
Melb Mustangs 1 Melb Ice 5 -0.4
CBR 4 Melb Mustangs 2 -0.2
Week of 8/16100.0*Chance in playoffs100.0*Average seed
Melb Mustangs 6 Newcastle 3 +0.3
Adelaide 5 CBR 2 +0.2
Melb Ice 7 Newcastle 2 -0.1
Adelaide 6 CBR 2 +0.1
Week of 8/23100.0*Chance in playoffs100.0*Average seed
Melb Ice 2 Perth 3 +0.2
Syd Ice Dogs 4 Melb Mustangs 3 (so)+0.2
Newcastle 1 Melb Mustangs 4 +0.2
Melb Ice 4 Perth 5 (so)+0.1
Points
Chance Will Make Playoffs